3com DUA1800-0AAA04 User Manual

C

HAPTER

 2: I

NSTALLING

 T

HE

 L

INK

B

UILDER

 MSH

DUA1800-0AAA04

WARNING: During installation and maintenance operations, the 
powered-up MSH must not be left unattended

WARNING: This equipment must be earthed. Disconnect both 
power leads before servicing.

ATTENTION - Débrancher les 2 cordons avant entretien.

The MSH cannot be powered from IT

‡

 

supplies. If your supplies 

are of the IT type, then the unit should be powered with 230V (2P 
+ T) via an isolation transformer ratio 1:1, with the secondary 
connection point labelled neutral, connected directly to earth.

‡

Impedance à la tierre

The MSH operates under SELV conditions (Safety Extra Low 
Voltage) according to IEC 950, the conditions of which are 
maintained only if the equipment to which it is connected is also 
operating under SELV.

The power inlet panel is an integral part of the MSH chassis. Do 
not make any attempt to remove it. If you suspect a problem is 
related to the panel, please contact your supplier.

■

The power lead must be approved for the country where it will be 
used.

■

The appliance coupler (that is the connector to the device itself - 
not the wall plug), must have a configuration for mating with a 
EN 60320/IEC320 appliance inlet (Standard Sheet C14).

■

The power lead must be UL-listed and CSA-certified.

Chassis.bk : CHAPTER2  Page 6  Monday, February 10, 1997  1:11 PM